private void SignUp_btn_Click(object sender, EventArgs e) { try { if (ID_textbox.Text == string.Empty) { MessageBox.Show("Empty ID Box", "Empty detected", MessageBoxButtons.OK, MessageBoxIcon.Error); ID_textbox.Focus(); } //check the signup name box if it's empty if (Name_TextBox.Text == string.Empty) { MessageBox.Show("Empty Name Box", "Empty detected", MessageBoxButtons.OK, MessageBoxIcon.Error); Name_TextBox.Focus(); }//check te signup password box if it's empty else if (Password_TextBox.Text == string.Empty) { MessageBox.Show("Empty Password Box", "Empty detected", MessageBoxButtons.OK, MessageBoxIcon.Error); Password_TextBox.Focus(); } else if (Email_textBox.Text == string.Empty) {//Check email box MessageBox.Show("Please enter your email", "Email", MessageBoxButtons.OK, MessageBoxIcon.Information); Email_textBox.Focus(); } //check the digit of password else if (Password_TextBox.Text.Length < 8) { MessageBox.Show("Hint: short password , password should be 8 digit or more ", "short password", MessageBoxButtons.OK, MessageBoxIcon.Information); Password_TextBox.Focus(); Password_TextBox.SelectAll(); } else if (ID_textbox.Text.Length < 9) { MessageBox.Show("Hint: short ID , ID should 9 digit or more ", "Short user ID ", MessageBoxButtons.OK, MessageBoxIcon.Information); ID_textbox.Focus(); ID_textbox.SelectAll(); } else { //Enter new data iin database OnlineBankingSystemDBDataset.UsersRow row; row = onlineBankingSystemDBDataset1.Users.NewUsersRow(); row.User_ID = int.Parse(ID_textbox.Text); User_ID = int.Parse(ID_textbox.Text); U_Name = Name_TextBox.Text; row.Name = Name_TextBox.Text; row.Email = Email_textBox.Text; row.Password = Password_TextBox.Text; onlineBankingSystemDBDataset1.Users.Rows.Add(row); this.usersTableAdapter.Update(onlineBankingSystemDBDataset1.Users); if (usersTableAdapter.Check_data_Entry(Name_TextBox.Text) != null) { MessageBox.Show("Account created", "Account Manager", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show("Cannot enter"); } } } catch (Exception data_signup) { MessageBox.Show(data_signup.Message, "Exception Message", MessageBoxButtons.OK, MessageBoxIcon.Information); } }